MH370: Here's what's been found from jetliner 3 years after it disappeared

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(CNN)Three years after Malaysia Airlines Flight 370 vanished with 239 people aboard, one of the world's biggest aviation mysteries remains unsolved.

Searchers have found debris in the Indian Ocean believed to be from the doomed airliner that disappeared on March 8, 2014. They have confirmed three pieces as certainly from the plane, while five others remain highly likely but inconclusive.

CONFIRMED

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Wing flap:

Where found: Tanzania

When: June

Authorities say this piece of debris has been confirmed to be from MH370. It was found in June on Pemba Island, in the Indian Ocean near the mainland. It is believed to be part of the outboard wing flap of the missing Boeing 777.

Plane wing fragment

Where found: Mauritius

When: May

The fragment of plane wing has been confirmed as from the missing jetliner. A "part identifier" was legible on the plane piece, officials said, which allowed investigators to identify the wreckage definitively.

Flaperon :

Where found: Reunion Island

When: July 2015

Australian officials have said the flaperon is confirmed to be from the jetliner -- the first trace of the plane since it vanished in March 2014. Numbers found inside the flaperon match records from a company that manufactured it for MH370, French officials said. The unique identifier means it's definitely from this particular plane.

The Indian Ocean island sits between Madagascar and Mauritius.

Photos:MH370: Suspected debris and personal belongings found in Madagascar

A number of personal items suspected to belong to passengers of missing Malaysian Airlines Flight 370 have been found on Riake Beach, Madagascar.

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Photos:MH370: Suspected debris and personal belongings found in Madagascar

Malaysian Airlines flight 370 disappeared without a trace during a journey from Kuala Lumpur to Beijing in March 2014. There were 239 people aboard when it vanished.

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Photos:MH370: Suspected debris and personal belongings found in Madagascar

Pictures of the recently found items have been shared with relatives of the missing passengers for possible identification.

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Photos:MH370: Suspected debris and personal belongings found in Madagascar

The items were found by Blaine Gibson, who travels around the region in a quest to discover what happened to the Malaysian Airlines flight. Other items, also found on Riake Beach by Gibson, are currently under investigation as potential debris.

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Photos:MH370: Suspected debris and personal belongings found in Madagascar

Gibson has also previously found suspected debris from MH370 off the coast of Mozambique.

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HIGHLY LIKELY

Cabin interior panel

Where found: Madagascar

When: June

Tests show the part is "almost certainly" from the missing jetliner. While Australian transportation authorities confirmed the part is from the same type of aircraft, they cannot confirm it is specifically from MH370.

MH370 is the only Boeing believed missing in the Indian Ocean. Australia spearheaded the search for the jetliner in partnership with officials from Malaysia and China.

Engine cowling

Where found: Mossel Bay, South Africa

When:March 2016

The part was identified by the Rolls Royce stencil on it, which is consistent with those used by Malaysia Airlines. But just like the previous parts, it is "almost certainly" from the missing jetliner. But since it has no "unique identifier" linking it specifically to MH370, officials can only confirm it's from the same type of aircraft.